Q: Is 870,400 a Composite Number?

Why is 870,400 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 870,400 can be evenly divided by 1 2 4 5 8 10 16 17 20 25 32 34 40 50 64 68 80 85 100 128 136 160 170 200 256 272 320 340 400 425 512 544 640 680 800 850 1,024 1,088 1,280 1,360 1,600 1,700 2,048 2,176 2,560 2,720 3,200 3,400 4,352 5,120 5,440 6,400 6,800 8,704 10,240 10,880 12,800 13,600 17,408 21,760 25,600 27,200 34,816 43,520 51,200 54,400 87,040 108,800 174,080 217,600 435,200 and 870,400, with no remainder.

Since 870,400 cannot be divided by just 1 and 870,400, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).